论文部分内容阅读
最小冗余阵作为智能天线中的一种,能以较少的阵元数获得比均匀阵大得多的阵列孔径,从而提高分辨率、简化系统、降低成本。但阵列的非均匀性导致最小冗余阵的旁瓣电平过高,为此文中提出了一种基于子空间的迭代算法抑制其旁瓣。仿真结果表明:此方法收敛速度快,可控旁瓣个数多,并且利用低旁瓣的最小冗余阵,对角度靠近观察方向的干扰进行抑制时,抗干扰能力增强,信号噪声干扰比得到提高。
The smallest redundant array, as one of the smart antennas, can obtain a much larger array aperture than a uniform array with a small number of array elements, thereby improving the resolution, simplifying the system and reducing the cost. However, the inhomogeneity of the array leads to the high sidelobe level of the smallest redundant array. Therefore, a subspace-based iterative algorithm is proposed to suppress the sidelobe. The simulation results show that this method has the advantages of fast convergence rate, large number of controllable sidelobes, and the use of low-side-lobe minimum redundancy matrix to suppress the interference near the viewing direction when angle is close to, the anti-interference ability is enhanced and the signal noise interference ratio is obtained improve.